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Alex Granovsky
gran@classic.chem.msu.su

Yes this is the key problem with OpenMPI.

Best wishes,
Alex

On Sun Feb 5 '12 10:59pm, Jim Kress wrote
-----------------------------------------
>Is this why you prefer we use MVAPICH or Intel MPI?

>Jim

>On Tue Nov 15 '11 2:30pm, Alex Granovsky wrote
>----------------------------------------------
>>Hi,

>>you are trying to use 64-bit OpenMPI libraries with Firefly.
>>You need to use 32-bit libs. You can find how to create them
>>on this Forum. Nevertheless, please take in mind the following:

>>1. There were changes in ABI of OpenMPI 1.4 as compared
>>with 1.2 series. This broke compatibility with executables
>>compiled with OpenMPI 1.2.x, such as Firefly 7.1.G and thus
>>Firefly version 7.1.G is not compatible with OpenMPI 1.4.x
>>To use Firefly with OpenMPI 7.1.G you need current beta of
>>Firefly.

>>2. Anyway, I do not recommend to use OpenMPI with Firefly at all as  
>>the implementation of collective operations in OpenMPI is not safe
>>and lacks proper synchronization. Thus, we cannot guarantee stable
>>execution of Firefly with OpenMPI. Though the workarounds for these
>>problems exist both in OpenMPI (you can find some in the OpenMPI
>>mailing lists) and in Firefly code, their use decrease overall
>>performance of Firefly.

>>Kind regards,
>>Alex Granovsky
>>
>>
>>
>>
>>On Tue Nov 15 '11 1:20pm, Eldar Mamin wrote
>>-------------------------------------------
>>>Dear all

>>>does openmpi-1.4.1
>>>(~$ which mpirun
>>>/unicluster/opt/OpenFOAM/1.7/ThirdParty-1.7.1/platforms/linux64Gcc/openmpi-1.4.1/bin/mpirun)

>>>fit the appropriate version of firefly -"Firefly version 7.1.G download links, Linux OpenMPI v. 1.2.x, dynamically linked NPTL-based version"

>>>I got the following error

>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>./firefly: error while loading shared libraries: libmpi.so.0: wrong ELF class: ELFCLASS64
>>>